JPS5839557Y2 - Continuum of grooved magnetic recording and reproducing disks - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a grooved magnetic recording/reproducing disk.

Currently, there is a desire in many fields for a function that allows images and sounds to be recorded on the same medium, played back, and perceived visually and auditory simultaneously.

In the educational field, for example, magnetic sheets (printed on the front side, magnetic recording on the back side) and voice cards (printed on the front side of the card, with a magnetic stripe on a part of the card are magnetically recorded).
Furthermore, audio slides, etc., in which a magnetic film is formed around a slide film frame and audio is recorded and reproduced, have been put into practical use.

Furthermore, in the entertainment field, songs in which entire Sonorama-style discs (mechanical recording discs, so-called records) are pasted onto some of the pages of songbooks are beginning to be widely used.

In order to make the image on the magnetic sheet easier to see, a magnetic recording/reproducing device for such a magnetic sheet holds the magnetic sheet in a stationary state and inserts the magnetic head into the spiral recording trunk while keeping the magnetic head in contact with the magnetic film surface of the magnetic sheet. It is common to use a method of turning along the
(see publication).

In order to simplify the driving mechanism of the magnetic head of a magnetic recording and reproducing device and to ensure that the magnetic head can be moved along the spiral recording trunk of the magnetic sheet,
Adding grooves to the recording trunk has been practiced.

Regarding the manufacturing method of such a grooved magnetic recording/reproducing disk,
Many proposals have been made in the past, such as those disclosed in Japanese Patent Publications No. 39-19680 and Japanese Patent Publication No. 39-20762, which are useful as continuous manufacturing systems.

However, conventional grooved magnetic recording and reproducing disks of this type are either stand-alone disks or only have sheets that inseparably contain images associated with audio recorded in a recording trunk. Ta.

Therefore, with conventional grooved magnetic recording and reproducing disks, it is not possible to freely select the relationship between image and sound, and the use of the disk is also limited.
It was limited to commercially available magnetic study sheets and Sonoshima format booklets.

In view of these points, as described in the specification of Utility Model Registration Application No. 90258 filed in 1978 by the present applicant, a groove that can be used by pasting it on any paper surface or member with an extremely simple operation is proposed. A magnetic recording/reproducing disk has been devised.

The grooved magnetic recording/reproducing disk described in the above application has a pressure-sensitive adhesive applied almost uniformly to the back surface of the grooved magnetic recording/reproducing disk, and the adhesive layer is usually covered with release paper or the like. It is covered and has a convenient structure for storage and portability, and when in use, it can be pasted by simply peeling off the release paper and pressing the adhesive layer onto any paper surface.

If such a grooved magnetic recording/reproducing disk is used, an amateur can freely attach the grooved magnetic recording/reproducing disk to the front or back side of a self-made photograph and record content related to the photograph. Since it is easy to perform, and the audio can be integrally recorded on picture postcards, other catalogs, reports, etc., it finds an extremely wide range of uses for educational, entertainment, and office purposes.

Next, this type of grooved magnetic recording/reproducing disk will be explained with reference to FIGS. 1 to 5 of the accompanying drawings.

FIG. 1 is a partial cross-sectional view for explaining an example of a method for manufacturing a grooved magnetic recording/reproducing disk.

In FIG. 1, reference numeral 10 is a magnetic sheet for manufacturing a disk, which is composed of a thermoplastic plastic film substrate 11 and a magnetic film 12.

The plastic film substrate 11 is made of vinyl chloride, vinyl chloride acetate, or the like, and has a thickness of:
Those with a power of about 0.1 to 0.5 w are selectively adopted depending on the purpose.

The magnetic film 12 is made of vinyl chloride, for example, VAGH, as a main binder, calcium stearate as a stabilizer, silicone oil as a lubricant, and magnetic powder mixed in the binder.

The magnetic powder is γ-Fe2, which is generally used for magnetic tapes.
O3 (coercive force He: 250-3500e) or Fe
304 (Hc: 300-4500e), or cobalt doped, or deposited γ-Fe2O3 (
Fe304 (etc.) is used.

The weight ratio of magnetic powder to main binder resin is 2:1 to 4:
The first place is used selectively.

The thickness of the magnetic film is about 3 to 20μ, and is suitable for ordinary gravure,
It is formed by a coating method such as doctor or reverse coating, or by silk screen printing.

Reference number 20 is a mold for forming grooves in the magnetic sheet, and grooves 21 are formed in a spiral shape on the surface of a plate made of brass or the like.

To increase practical durability, the surface is usually plated with hard chrome and polished to a mirror-like finish.

Reference numeral 30 denotes a backing base for supporting the magnetic sheet 10 to be grooved, and is generally made of a metal plate 31, such as copper or brass, and a felt plate 32, which acts as a cushion.

Heat may be applied to the metal plate 31 when using a heating method.

Heat the mold 20 (generally 120-180°C), arrow F
Pressure is applied in the direction of
When removed, a grooved magnetic recording/reproducing disk 10' having a cross-sectional structure as shown in FIG. 2 is produced.

The width of the groove 12A to be formed is selected to correspond to the width of the magnetic head 40.

The width of the magnetic head 40 is generally 0.2 to 0.8 rIr!
A range of about rL is used.

Reference number 12B is a partition between grooves 12A.

The width of this partition wall 12B is usually in the range of 0.2 to 0.5 m+y+.

The grooved magnetic recording/reproducing disk 10' produced in this manner is made into a product, for example, in the form shown in a perspective view in FIG.

A pressure-sensitive adhesive 13 is applied to the outer surface of the disk 10' shown in FIG.
is applied to a substantially uniform thickness, and a plate-like member 14 having release paper or a release agent is further applied to cover this pressure-sensitive adhesive layer 13.

Furthermore, depending on the application, a heat-sensitive adhesive may be used instead of the pressure-sensitive adhesive 130.

These pressure-sensitive or heat-sensitive adhesives can be put to practical use by selectively using those commonly used at the current state of the art.

In order to improve the contact between the magnetic head and the grooved magnetic recording/reproducing disk, a thickness of 0.05 to 2.0 mm is provided between the substrate 11 of the disk and the pressure-sensitive adhesive layer 13 to provide a cushioning effect in the thickness direction. It is effective to install foamed elastic plastic plates, rubber plates, paper, etc. in the shape of a sandwich.

FIG. 4 shows a cross section taken along the line X-Y in FIG. 3. Disk 10
A recess 12C is formed in the center of the grooved magnetic recording/reproducing disk 10', and this recess 12C is located at the center of rotation of the head of the recording/reproducing device when the grooved magnetic recording/reproducing disk 10' is attached to a photograph or other object. This is a recessed portion for setting (registering) when installing the recording/reproducing device at a proper position.

That is, the recording/playback device is also provided with a convex portion that fits into the concave portion 12C at a suitable location, and the positions of the recording/playback device and the magnetic recording/playback disc are adjusted so that the concave portions and the convex portions fit together. Window cleaning can be done easily.

Also, as in another example shown in FIG.
Instead of providing a convex portion 12E, a convex portion 12E may be formed on the recording/playback device, and a concave portion that fits into the convex portion 12E may be formed on the recording/reproducing device.

Furthermore, a plurality of such convex portions or concave portions are formed in appropriate portions (for example, around the periphery) of the grooved magnetic recording/reproducing disk, and the recording/reproducing device also has a setting convex portion or convex portion that fits therein. A plurality of sections may be formed.

The grooved magnetic recording/reproducing disk as described above has a mold release member 14.
It can be fixed freely by simply peeling off the pressure-sensitive adhesive layer 18 and pressing the pressure-sensitive adhesive layer 18 to the appropriate location of any photograph, catalog, printed matter, etc., and it can be used as a visual-audio simultaneous reading medium that combines visual and auditory senses. It is extremely useful for creating.

However, the above-mentioned grooved magnetic recording/reproducing disks are pasted one unit at a time to a release paper, and then, as the intended use arises, they are removed one by one from the release paper and pasted onto a corresponding object. Therefore, it is not necessarily suitable for use in the following cases.

For example, currently, color photographic prints are taken using negative color film, developed in a photo lab, printed on color photographic paper, and delivered to the user.

Generally, printing of color photographic prints is performed using a roll-like force of 2-
This is done continuously and automatically using photographic paper.

If a grooved magnetic recording and reproducing disk is attached to the back of such a color photographic print to make it a vocal print, the grooved magnetic recording and reproducing disk should be attached immediately after the color photographic print is printed and delivered to the user. There may be cases where it is convenient for both manufacturers and users to adopt this method.

In this case, for the continuous and automatic printing of color photographic prints using a roll of color photographic paper,
It is not efficient to attach the grooved magnetic recording/reproducing disks as described above one unit at a time.

In view of the above-mentioned points, the object of the present invention is to provide a continuous body of grooved magnetic recording and reproducing disks suitable for automatically and continuously attaching grooved magnetic recording and reproducing disks. It is to be.

Next, the present invention will be described in detail with respect to embodiments of the present invention based on FIGS. 6 to 9 of the accompanying drawings.

FIG. 6 shows a long carrier 11 in which units of grooved magnetic recording/reproducing disks as described above with reference to FIGS. 1 to 5 are connected.
A pressure-sensitive, heat-sensitive, or heat-sensitive pressure adhesive 13' is formed on the back surface of the carrier 11' at approximately constant intervals on a necessary part or the entire surface, and a release paper 14' is formed at approximately constant intervals.
An embodiment of the present invention is shown in a perspective view, in which the continuous body 60 is attached and further wound around the winding core 50.

Reference number 12' indicates a magnetic film as a magnetic recording/reproducing disk medium formed on the continuous carrier 11', and corresponds to the magnetic film 12 in the unit of the grooved magnetic recording/reproducing disk shown in FIG. It is something to do.

Similarly, 12A' indicates what corresponds to the spiral groove 12A.

FIG. 7 shows the details within the dotted line area in FIG. 6 in a plan view.

As shown in FIG. 7, a notch is provided as indicated by reference numeral 61.

This notch 61 is cut through the magnetic film 12' and the carrier 11' to the upper surface of the release paper 14', and can be attached to, for example, color photographic paper by peeling off only the inside of this solid line part like a self-label. It is intended to do so.

Alternatively, cuts as shown by broken lines 62 may be formed at predetermined intervals.

Further, in order to continuously feed the continuous body 600 rolls, it is convenient to form perforations as indicated by reference numeral 63 on one side or both sides (in the illustrated embodiment, only one side).

Furthermore, in order to affix this medium to a fixed position on photographic paper, for example, an alignment mark 64 (general printing or printing or affixing of highly reflective ink, metal foil, etc. for optical alignment, and further mechanical alignment) is used. It is extremely effective for mass production to add protrusions or depressions, etc.

If the continuous roll shape is used as in the above embodiment,
For example, it is extremely advantageous for printing color prints (or black and white prints) on continuous photographic paper, and then, after prescribed development, fixing, and drying, continuously attaching grooved magnetic recording and reproducing disks. This is convenient for automatically creating a print with a magnetic recording section.

FIG. 8 shows another embodiment of the continuum according to the present invention with grooves 12
It is shown in a cross-sectional view with A' etc. omitted.

The continuum of this embodiment has a foamed plastic film (for example, a plastic film of foamed polyurethane, rubber, etc. with a thickness of about 0.3 to 21 ran) on the lower surface of the carrier 11' of the embodiment of FIGS. 6 and 7. ) or a cushion layer 1 of fibrous material, paper, etc. with high elasticity in the thickness direction
5 through pressure-sensitive or heat-sensitive or pressure-sensitive heat adhesive 13'
A release paper 14' is attached.

In general, the sensitivity of recording and reproduction in magnetic recording largely depends on the quality of the contact between the gap surface of the magnetic head and the surface of the magnetic film.

The better the degree of contact, the better the recording and reproducing sensitivity will be.

Therefore, as in the embodiment shown in FIG. 8, providing a Kunjon effect in the thickness direction of the medium greatly improves the above-mentioned effects.

It is also very useful for maintaining the surface flatness of the medium by avoiding unevenness or deformation of the surface of the object to which the medium is attached.

FIG. 9 shows still another embodiment of the continuous body according to the present invention in a sectional view with grooves 12A' etc. omitted.

In the continuum of this embodiment, a backing layer 16 of approximately uniform thickness, such as plastic film, paper, or metal foil, is adhered to the lower surface of the Kunjong layer 15 of the embodiment of FIG.
A pressure-sensitive, heat-sensitive, or pressure-sensitive heat adhesive 13' is formed on the lower surface of the release paper 13' to have a substantially uniform thickness on a part or the entire surface.
4'.

Such a structure is advantageous in preventing deformation of the completed product when the medium is adhered to flat photographic paper.

Of course, the embodiments shown in FIGS. 8 and 9 can also be used in the form of a roll as shown in FIG.

[Brief explanation of drawings]

Figure 1 of the accompanying drawings is a partial cross-sectional view for explaining an example of a method for manufacturing a grooved magnetic recording/reproducing disk, Figure 2 is a partial cross-sectional view showing a grooved magnetic sheet, and Figure 3 is a pressure-sensitive disk. A perspective view showing an example of a grooved magnetic recording/reproducing disk provided with an adhesive layer and a release member, FIG. 4 is a partial sectional view taken along the X-Y line in FIG. 3, and FIG. 5 is a grooved magnetic recording/reproducing disk. A view similar to FIG. 4 showing another example of the plate, FIG. 6 a schematic perspective view showing a continuous body of a grooved magnetic recording/reproducing disk as an embodiment of the present invention, and FIG. 7 a diagram similar to FIG. 6. FIG. 8 is a partial sectional view showing another embodiment of the present invention, and FIG. 9 is a partial sectional view showing still another embodiment of the present invention. 10... Magnetic sheet, 10'... Grooved magnetic recording/reproducing disk, 11'... Continuous carrier, 12
'...Magnetic film, 12A'...Groove, 13
'・・・Pressure-sensitive or heat-sensitive or pressure-sensitive heat adhesive, 1
4'...Mold release member, 15...Cushion layer, 16...Backing layer, 20...Mold, 30... Backing stand, 31... Metal plate, 32... Felt plate, 40... Magnetic head, 50... Winding core, 60... - A continuum of grooved magnetic recording and reproducing disks.

Claims (2)

[Scope of utility model registration request] (1) A unit of a grooved magnetic recording/reproducing disk medium having grooves for guiding a magnetic recording or reproducing head is continuously formed on a carrier, and a pressure-sensitive, heat-sensitive, or pressure-sensitive thermal adhesive layer is applied to the back surface of the carrier. A continuous body of grooved magnetic recording/reproducing disks made of a part or almost the entire surface of which is applied and a release member is attached, wherein perforations for continuous feeding are provided on one or both sides, and the grooves are provided with perforations on one or both sides. A continuum of grooved magnetic recording/reproducing disks, characterized in that each unit of the grooved magnetic recording/reproducing disks is provided with an alignment mark. (2) The utility model registration claim No. The continuum described in item 1).